Which system of equations has no solution? A. 3y = 1 + x y = –2x + 5 B. 4x – 5y = 3 –3 = 4x – 5y C. 5x + 4y = 1 4x – 2y = 4 D. y = –3x + 4 y = –34x + 1

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

(: the two box-and- whisker plots below show the scores on a math exam for two classes. what 2 things do the interquartile range tell you about the two classes?

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.